Bi-directional communication between PC and 36-pin parallel port printer. | Ideal solution for laptop PCs or desktops without parallel port for older printers. | Easy installation and no setup or configuration needed. | 100% plug and play in Win 98SE, ME, 2000, XP, Vista, Win7, Win8/8.1, Win10. | No IRQ sharing needed. Saves valuable resources for other I/O expansion cards. | Bi-directional data communication between PC and printer for high speed printing. | USB bus power. No external power supply needed. | Fully compatible with ECP, EPP and SPP modes.